1. In a Mathematics test, the following marks were obtained by 40

1. In a Mathematics test, the following marks were obtained by 40 students. Arrange

these marks in a table using tally marks.
4
5
5.
6
7.
2
1 3
8
7
1
6
1
5
7
4
3
9
5
a NA
8
4
2
8
9
5
8
6
7 3
7 4
5
6 9
6
4
4
6
(a) Find how many students obtained marks equal to or more than 7.
(b) How many students obtained marks below 4?‚Äč


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